Patent model. Steam engine valve, Frost, patent no. 421355. MC*308718.
Size: 4256px × 2832px
Photo credit: © History of America / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: america, american, americana, ancient, archival, archive, artefact, artistic, bygone, cultural, culture, editorial, engineering, era, gallery, heritage, historic, historical, history, industry, museum, nostalgia, nostalgic, object, photography, states, traditional, united, usa, vintage, work